Fixed indentation issue in IndexAsBlog docs

Author: gregbell

.yardopts

@@ -4,5 +4,5 @@ lib/**/*.rb
 --asset docs/images:images
 -
 README.rdoc 
-CHANGELOG.rdoc
+CHANGELOG.md
 docs/**/*.md

docs/3-index-pages/index-as-blog.md

@@ -5,10 +5,10 @@
 Render your index page as a set of posts. The post has two main options:
 title and body.
 
-  index :as => :blog do
-    title :my_title # Calls #my_title on each resource
-    body  :my_body  # Calls #my_body on each resource
-  end
+    index :as => :blog do
+      title :my_title # Calls #my_title on each resource
+      body  :my_body  # Calls #my_body on each resource
+    end
 
 ## Post Title
 

lib/active_admin/views/index_as_blog.rb

@@ -6,10 +6,10 @@ module Views
     # Render your index page as a set of posts. The post has two main options:
     # title and body.
     #
-    #   index :as => :blog do
-    #     title :my_title # Calls #my_title on each resource
-    #     body  :my_body  # Calls #my_body on each resource
-    #   end
+    #     index :as => :blog do
+    #       title :my_title # Calls #my_title on each resource
+    #       body  :my_body  # Calls #my_body on each resource
+    #     end
     #
     # == Post Title
     #